The NOV 250T-5M Triplex Plunger Pump is a high-performance, medium fluid-end pump engineered for reliable operation in demanding oilfield and industrial applications. Designed within the proven NOV T-Series platform, the 250T-5M delivers excellent durability, high volumetric efficiency, and consistent output under a wide range of operating conditions. With a 5-inch stroke and support for multiple plunger sizes, this pump provides flexible flow rates and pressure capabilities suitable for water transfer, injection, disposal, and general fluid-handling operations.
Key Features
- Located inside an insulated steel pump house with a garage style door, windows, and a steel door. Pump House is included.
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Medium Fluid End (M-Model) for enhanced durability and pressure capability.
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250 BHP rating at 400 RPM ensures strong performance with balanced mechanical loading.
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High pressure capacity – M-model rated up to 3026 PSI.
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Flexible plunger options, including 3.00″ plungers (other sizes available).
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Smooth, efficient operation provided by a triplex design.
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Multiple gear reduction options for matching pump speed to any power system.
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Robust construction with a heavy-duty crankshaft and reinforced frame.
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Large oil capacity for improved cooling and long service life.
Performance Specifications
Model: 250T-5M Triplex Plunger Pump
Plunger Size: 3.00 in
Plunger Area: 7.0686 sq. in.
GPM per RPM: 0.4590
BPD per RPM: 15.7371
Maximum Working Pressure (M-Model): 3026 PSI
Rated BHP at 400 RPM: 250 HP (187 kW)
Rated Plunger Load: 14,855 lb (6,738 kg)
Note: Actual GPM and BPD vary with RPM. A complete flow/pressure performance chart is provided for customer reference.
Click here to view NOV’s specification sheet on this Triplex pump.
Click here to view NOV’s installation, care and operation manual on this Triplex pump.
Mechanical Specifications
Pump Size
Crankshaft Extension
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Diameter: 4.875 in (123.8 mm)
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Length (long side): 11 1/8 in (282.6 mm)
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Length (short side): 5 5/8 in (142.9 mm)
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Keyway: 1¼” × 5/8″ (32 × 16 mm)
Recommended Sheave Sizes
Pinion Shaft Extension (When Gear Reducer Is Supplied)
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Direct Drive Diameter: 3.5 in (88.9 mm)
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Direct Drive Length: 5 11/16 in (144.5 mm)
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Direct Drive Keyway: 7/8″ × 7/16″ (22.2 × 11.1 mm)
Fluid End Information
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Type: Medium Fluid End (M-Model)
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Pressure Rating: Up to 3026 PSI
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Materials & configurations: Available in standard and optionally enhanced metallurgy for corrosive or high-wear service.
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Plunger sizes: Various diameters supported (3.00″ shown; others available based on application).
Drive & Mounting Options
The 250T-5M supports multiple drive configurations:
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Direct drive using the specified pinion shaft extension
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Belt or chain drive (factory consultation recommended)
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Gear drive with a wide range of reducer ratios
Gear Reduction Ratios Available
2.27:1
2.89:1
3.25:1
3.36:1
3.69:1
4.38:1
4.84:1
5.63:1
Lubrication & Oil Capacity
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Crankcase Oil Capacity: 6.5 gallons (24.6 L)
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Gear Reducer Oil Capacity: 3.5–6.5 gallons (13.2–24.6 L), depending on ratio
Large oil reservoirs help maintain cooler operating temperatures and support longer maintenance intervals.
Applications
The NOV 250T-5M is well-suited for:
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Water transfer
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Waterflood injection
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Saltwater disposal
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Pipeline pressure boosting
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Industrial fluid handling
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General service pumping requiring medium pressures and consistent duty cycles
Shipping Weight & Packaging
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Pump on wood skids: 4,486 lb (2,035 kg)
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Gear reducer (approx.): 1,100 lb (499 kg)
- Housing Containment: unknown
Available Configurations & Options
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Alternative fluid end designs
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Optional plunger materials and sizes
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Various gearbox configurations
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Upgraded metallurgy for corrosive/hard-service conditions
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Custom drive packages
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Accessory equipment (safety valves, pulsation dampeners, etc.)
Ordering Information
Model Number: 250T-5M
Helpful Links
Shipping Countries:
United States (US)
Ready to ship in 1-3 business days
from United States (US)
Shipping Policy
To ensure your order is shipped safely and appropriately, we determine the shipping method based on weight, size, and handling requirements.
Parcel Shipments
Smaller items that meet standard carrier limits are shipped via common parcel carriers such as UPS, FedEx, or USPS. This is calculated for you automatically at checkout.
LTL Freight (Less-Than-Truckload)
Orders that:
Weigh over 150 lbs, or
Exceed parcel carrier size or dimensional limits
will ship via LTL freight.
LTL shipments are handled by third-party freight carriers and typically involve palletized delivery. Transit times and delivery scheduling vary depending on carrier availability, destination, and freight class.
Please note:
LTL deliveries often require a delivery appointment.
Liftgate service, limited access, or residential delivery may affect transit time and cost.
It is best to reach out to us before your purchase on items that exceed 150lbs or that are larger than 96 inches in any one direction in order to ensure that you get an accurate estimate on cost.
Full Truckload (FTL) / Specialized Freight
Large or specialized items—such as tanks, vessels, oversized equipment, or shipments requiring hazmat handling or oversized permits—are managed directly by Tri-State Supply.
These shipments may require:
Full truckload (FTL) transport
Oversized or overweight permits
Specialized carriers or equipment
Additional coordination prior to shipment
Because of this, processing and delivery timelines for full truckload or specialized freight are determined on a case-by-case basis. Our team will coordinate directly with you to confirm logistics before shipment. You will need to reach out to us for a quote. You may also arrange freight for your purchases. Loading fees, appointments, and more arrangements will still need to be agreed upon before something leaves our property.
Order Processing & Timing
Most in-stock orders are processed within 1–3 business days. Freight shipments—especially LTL and full truckload—may require additional time to schedule pickup and delivery.
Estimated delivery dates are provided as guidance and are subject to carrier and logistical factors beyond our direct control.
Questions Before You Order
If you are purchasing:
Large or heavy items
Freight-sensitive equipment
Job-site or residential deliveries
we strongly recommend contacting us before placing your order so we can help confirm the best shipping method and set clear expectations.
Tri-State Supply
Customer Support Hours
Monday–Friday, 8:00 AM – 5:00 PM CST
Please allow up to 24 business hours for a response.
Refund Policy
Tri-State Supply Corp
Return & Refund Policy
We want you to feel confident in every purchase from our store. As part of BranaBee, we follow the BranaBee Refund Policy (https://branabee.com/refund_returns/) and have added a few specifics to make returns as simple as possible.
1. Return Eligibility
We accept returns on new, unused items within 30 days of delivery, as long as the item is in a condition that allows it to be resold.
Items marked “As-Is” or “As-Is Where-Is” cannot be returned.
To qualify for a return, items must:
Be unused
Be in original or equivalent packaging
Be free from damage, installation marks, or modifications
Used or installed items are not eligible for return or refund.
2. How to Request a Return
To start a return:
Submit a return or refund request for your order.
If eligible, we will provide a return shipping label via email.
Once we receive and inspect the item, your refund will be issued to your original payment method.
3. Large, Heavy, or Freight-Shipped Items
Returns for large or freight items require special handling:
Our team will contact you to coordinate the return.
Return eligibility and logistics are handled case by case.
Timelines and costs may differ from standard parcel returns due to shipping requirements.
4. Non-Refundable Items
Used or installed items
Items returned after 30 days
Items damaged due to improper packaging or handling
5. Questions Before You Buy
For large or freight-shipped items, we recommend contacting us before ordering. This helps confirm specifications and return expectations.
For any other questions, reach out during business hours:
Monday–Friday, 8:00 AM – 5:00 PM CST
Please allow up to 24 business hours for a response.
✅ Bottom line: Our goal is to make your shopping experience smooth and worry-free. If you ever have a concern about a return, we’re here to help.
